Foda F307 Remote Control 3.5 CH IR Ultra stable Metal Helicopter Toy w/ Gyro Full function 3 channel radio control (Left /Right, Forward/Backward, Hover, and Lands) Advance Lipo battery provide long and powerful flight / The internal helicopter battery charges from the remote control unit or USB Auto stable, rotor blade system for steady lifting-up / Tri-band Technology. Nonintervention used 3 band Ultra stable twin rotors design for indoor flight / High efficiency, driving motor and surge power Powered By 2 Solid Motors With A 3rd Motor in the Tail Rotor